Dual-chamber suction filtering device and filtering method

Abstract

A dual-chamber suction filtering device and filtering method, belonging to a surgical waste liquid collecting device, and solving the problem in the prior art that drainage fluid of an endoscope shaver system and a plasma surgical system is easily contaminated and cannot be separated in sections. The dual-chamber suction filtering device comprises a dual-chamber one-way valve ( 1 ), a switching valve ( 4 ), and a filtering branch ( 2 ) and a direct-passing main path ( 3 ) which are connected to each other in parallel, the water outlet of the dual-chamber one-way valve ( 1 ) being connected to the water inlet of the filtering branch ( 2 ) and the water inlet of direct-passing main path ( 3 ); the switching valve ( 4 ) is provided on the joint between the water inlet of the filtering branch ( 2 ) and the water inlet of direct-passing main path ( 3 ); the dual-chamber one-way valve ( 1 ) has a first drainage fluid system ( 5 ) setting, a second drainage fluid system ( 6 ) setting, and a dual-drainage fluid system ( 5, 6 ) setting, and the switching valve ( 4 ) has a filtering setting and a direct-passing setting. The dual-chamber suction filtering device and filtering method can be used for collecting and filtering drainage fluid.

1 . A dual-chamber suction filtering device comprising a dual-chamber one-way valve, a switching valve, and a filtering branch and a direct-passing main path which are connected to each other in parallel;
 wherein the water outlet of the dual-chamber one-way valve is connected to the water inlet of the filtering branch and the water inlet of the direct-passing main path;   the switching valve is provided on the joint between the water inlet of the filtering branch and the water inlet of the direct-passing main path;   the dual-chamber one-way valve has a first drainage fluid system setting, a second drainage fluid system setting and a dual-drainage fluid system setting, and the switching valve has a filtering setting and a direct-passing setting;   and the water inlet of the dual-chamber one-way valve is connected to the first drainage fluid system and/or second drainage fluid system when in use, respectively.   
     
     
         2 . The dual-chamber suction filtering device according to  claim 1 , wherein the switching valve also has a fluid stop setting. 
     
     
         3 . The dual-chamber suction filtering device according to  claim 1  or  2 , wherein in the dual-chamber one-way valve, an included angle connected to the water inlet of the first drainage fluid system and the water inlet of the second drainage fluid system is 60°, an included angle connected to the water inlet and the water outlet of the first drainage fluid system is 120°, and an included angle connected to the water inlet and the water outlet of the second drainage fluid system is 120°. 
     
     
         4 . The dual-chamber suction filtering device according to  claim 1 , wherein a stirring member is arranged on one side of the switching valve close to the dual-chamber one-way valve. 
     
     
         5 . The dual-chamber suction filtering device according to  claim 1 , wherein a spiral structure is arranged on the inner wall of the connecting pipeline between the dual-chamber one-way valve and the switching valve. 
     
     
         6 . The dual-chamber suction filtering device according to  claim 1 , wherein a path length of the direct-passing main path is less than that of the filtering branch. 
     
     
         7 . The dual-chamber suction filtering device according to  claim 1 , wherein the filtering branch is detachably connected in parallel to the two ends of the direct-passing main path via connection joints. 
     
     
         8 . The dual-chamber suction filtering device according to  claim 1 , wherein the filtering branch comprises a filtering barrel and a filtering member arranged in the filtering barrel. 
     
     
         9 . A dual-chamber suction filtering device according to any one of  claims 1  to  8 , wherein the filtering member is a collapsible filter element. 
     
     
         10 . A dual-chamber suction filtering method, wherein by adopting the dual-chamber suction filtering device as claimed in any one of  claims 1  to  9 , the filtering method comprises the following steps of:
 Step S 1 : connecting the water inlet of the dual-chamber one-way valve to the first drainage fluid system and the second drainage fluid system respectively, and connecting the water outlet of the filtering branch and the water outlet of the direct-passing main path to a fluid collection bottle; 
 Step S 2 : when it is necessary to collect and filter the drainage fluid to be detected in the first drainage fluid system and the second drainage fluid system at the same time, switching the dual-chamber one-way valve to a dual-drainage fluid system setting, connecting both of the first drainage fluid system and the second drainage fluid system to the water inlet of the dual-chamber one-way valve, and switching the switching valve to a filtering setting; wherein the drainage fluid in the first drainage fluid system and the second drainage fluid system flows through the dual-chamber one-way valve and the filtering branch in turn and then flows into the fluid collection bottle, and soft tissue debris may be filtered and retained in the filtering branch when the drainage fluid flows through the filtering branch; 
 when it is necessary to collect and filter the drainage fluid to be detected in the first drainage fluid system, switching the dual-chamber one-way valve to a first drainage fluid system connection setting, and switching the switching valve to a filtering setting; wherein the drainage fluid in the first drainage fluid system flows through the dual-chamber one-way valve and the filtering branch in turn and then flows into the fluid collection bottle, and soft tissue debris may be filtered and retained in the filtering branch when the drainage fluid flows through the filtering branch; 
 when it is necessary to collect and filter the drainage fluid to be detected in the second drainage fluid system, switching the dual-chamber one-way valve to a second drainage fluid system setting, and switching the switching valve to a filtering setting; wherein the drainage fluid in the second drainage fluid system flows through the dual-chamber one-way valve and the filtering branch in turn and then flows into the fluid collection bottle, and soft tissue debris may be filtered and retained in the filtering branch when the drainage fluid flows through the filtering branch; 
 when there is no need to collect and filter the drainage fluid in the first drainage fluid system and/or the second drainage fluid system, switching the dual-chamber one-way valve to a dual-drainage fluid system setting and switching the switching valve to a direct-passing setting, wherein the drainage fluid in the first drainage fluid system and/or the second drainage fluid system flows into the fluid collection bottle via the direct-passing main path.